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Media: In `wp_unique_filename()`, use explicit type casting when incrementing `$number`. 

This prevents the "non-numeric value encountered" warning in PHP 7.1, caused by trying to increment an empty string on the first loop iteration.

Props drrobotnik for initial patch.
Fixes #39774.



git-svn-id: https://develop.svn.wordpress.org/trunk@40039 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
Sergey Biryukov 2017-02-03 20:57:38 +00:00
parent 3155c8ac3e
commit 0b63252b2d
1 changed files with 5 additions and 3 deletions
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8
src/wp-includes/functions.php
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@ -2063,7 +2063,7 @@ function wp_unique_filename( $dir, $filename, $unique_filename_callback = null )
// Check for both lower and upper case extension or image sub-sizes may be overwritten.
while ( file_exists($dir . "/$filename") || file_exists($dir . "/$filename2") ) {
$new_number = $number + 1;
$new_number = (int) $number + 1;
$filename = str_replace( array( "-$number$ext", "$number$ext" ), "-$new_number$ext", $filename );
$filename2 = str_replace( array( "-$number$ext2", "$number$ext2" ), "-$new_number$ext2", $filename2 );
$number = $new_number;
@ -2083,11 +2083,13 @@ function wp_unique_filename( $dir, $filename, $unique_filename_callback = null )
}
while ( file_exists( $dir . "/$filename" ) ) {
$new_number = (int) $number + 1;
if ( '' == "$number$ext" ) {
$filename = "$filename-" . ++$number;
$filename = "$filename-" . $new_number;
} else {
$filename = str_replace( array( "-$number$ext", "$number$ext" ), "-" . ++$number . $ext, $filename );
$filename = str_replace( array( "-$number$ext", "$number$ext" ), "-" . $new_number . $ext, $filename );
}
$number = $new_number;
}
}